TY  - BOOK
AU  - Sagan, Carl 
TI  - The dragons of eden : : speculations on the evolution of human intelligence 
SN  - 0345260317
AV  - BF431  .Sa129 1977
U1  - HS 153  
PY  - 1977///
CY  - New York : 
PB  - Ballantine Books, 
KW  - Intellect.
KW  - Brain.
KW  - Genetic psychology.
ER  -